There are a number of necessary terminologies generally utilized in virology and ought to be clearly outlined to be in the identical understanding amongst scientists in addition to different folks like journalists, medical docs, scientists, attorneys, and other people from all walks of life. The terminologies turns into so necessary when when now we have an outbreak or alarming pandemic like COVID 19 the place most individuals had curiosity on the illness and the virus inflicting it. Through the COVID 19 pandemic, phrases equivalent to isolate, pressure and variant have been generally utilized by majority and due to this fact it was necessary to have widespread understanding to keep away from confusion. Due to this fact, I’ll outline these terminologies and others which are inclined to confuse college students and scientists. I will start defining from the highest to the lowest rank to make you understand better.